Drilling-machine.



No. 842,977 PATENTED FEB. 5, 1907 G. RIDDERHOF. DRILLING MACHINE.

APPLICATION FILED APR.13,1906.

2 SHEETSSHEET 1.

No. 842,977. PATENTBD PE B'I 1907 "c. RIDDERHOF.

DRILLING MACHINE.

APPLIOATIOH II LED APR. 13, 1906.

2 QHEETS-SHEET 2 Witrgesses:

CORXEIL HIDDERHOI", ()l. GRAND RAPIDS, MICHIGAN.

DRILLING-MACHINE}.

Specification of Letters Patent.

Application filed April 13.1906. Serial No. 311,603-

Patented Feb. 5, 1907.

a u. 11-711)! it may calmer/1.:

Be it known that l, (oRXiciL liIDDER-IIOF, a citizen of the lfnitedStates, residing at Grand Rapids. in the county of Kent and and usefulimprovements in Drilling-Mably mounted on the upper end of thestandbearing-balls b for the turret. 'Stt1t0()f.\ll(illlzill, haveinvented certain new chines. of which the following is a specilicatioii.

drillbig-machines.

The objects of this invention are,"lirst to provide an improveddrilling-machine having a plurality of spindles, any one, of which mayreadily be brought into position for use: second, to provide an improveddrilling-machii c having a plurality of spindles in which only the spindin working position is driven;

third, to provide an improved drilling-machine having, a plurality ofspindles in which the speed of the spindles can be independentlyadjusted; fourth, to provide an improved drilling machine which is yeryconvenient to use and one which is simple and durable in structure.

Further objects and objects relating to structural details willdefinitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices-and meansdescribed in the following specification.

a rd A, the standard being provided with-a flange-like bearing a,adapted to receive the The turret is held upon its hearings on thestandard by the.

collar (1,. the collar being preferably retained by aset-screw, as a.(See Fig. 1.) This forms a structure which is very convenient to Thisinvention relates to improvements in I The turret is provided withoutwardlv-- projecting, arms 13 B, by which the drillspmdlcs l) arecarried. The arms B pro- 'cct outward from the rin -like frame H b lwhich is carried by the upwardly-projecting arms I I. As the turret isrevolved the drillspindles are brought successively over the work-tableT, which may be in the usual or The invention is clearly defined, andpoint-.1

ed out in the claims.

A structure embod 'ng the features of my invention is clearly ilmstratedin the accompanying drawings, forming a part of this specification,in.which arms B by means of the sctscrews (1.

any desired l'oi'in.

adjustiiig-pinioiis /t' are arran ed to mesh. By this means the spindlesare lied to or from the work. i

On each of the drill-spindles .D is arranged a'wheel l). The wheels I)are splined to the spindles and are adjustably secured in position bymeans of the rods (1, which are core nected thereto and are arrangedthrough suitable holes provided therefor in the arms B. The rods dareadjustably secured to the The. rods 11 are connected to the wheels Dby means of the collars (1, which are arranged on the hubs thereof. Forconvenience in ad justing the wheels l) handles I) are pro- Figure 1 isa vertical section of a structure embodying the features of myinvention,

taken on a line corresponding to line 1 l oi' Fig. 2, certain parts, aswheels and shafts, being shown in full lines. Fig. 2 is a plan of thestructure appearing in Fig. 1. Fig. 3 is a horizontal section taken on aline correspending to line 3 3 of Fig. 1.

In the drawings the sectional views are l are idler-disks (i. ,t-hejorrnals G, which are arranged in the vidcd.

lars r Arranged in contact with the wheels 1) These disks are carried byThese handles project from the colhorizontal projecting bearings 13 onthe turret. ()n the upper end of the driving- 2 shaft E is a frictiondriving-wheel E. The

taken looking in the direction of the little arrows at the ends of thesection-lines, and i similar letters of reference refer to similar partsthroughout theseveral VIOWS;

Referr ng to the drawings, the column or standard A is mounted upon asuitable frame or base A. The standard A is preferably hollow, and thedriving-shait' E is arranged thcrethrough. A turret or head B is revoluvn ent therewith.

shaft E is arranged ecccntrically of the tiarret, so that as the turretis revolved tlieidlerdisks G are brought successively into engagelhcparts are so arranged that this takes place when one of the drillspindles is over the center of the work-table.

By this arrangeiitent the drill-spindles iray be brought successivelyinto position, in

which positionihey are properly connected to the driving-shaf When itisdesired to vary the speed of any of the drill-spindles, it may beactonplished by adjusting the spindle-wheels D to and from the center ofthe idler-disks Gr. The means by which this is accomplished have beendescribed.

The shaft 1) may be driven by any suitable connection. In the SUKECl/UTLill..strated I. have shown the satire connected to the horizontal shaltF, on which are p:.lle vs F. By this arrangement of the parts the iz'aehaie may be equipped with a nimiber of drills of varying sizes, and theymay be brought sneeessively into position for 1.se by the operatorwithout his changing his position or adjusting the work.

For retaining the turret-head in its adjizsti able position ispreferably provide a latch-pin 0, adapted to engage suitable holes 0.The 1 pin a is carried by the latch-lever c, which is i held in itsengaging position by the coiled spring a. By arranging the driving-wheeli E eecentrically of the turret the spindles are ron ;'ht into drivingconnection therewith as j the turret-head is revolved, so that thedrill- 1 spindles are driven only when they are in op-- erativeposition. l

This of course reduces the wear en the 1 pa ts and the vibration of themachine, the l power required tor operation, &e. l

While 1 have illustrated and described my i improved drilling-machine indetail in the l form preferred by me on aeeonntof strnel tural economyand convenience in use, I am awa. that it is capable of very greatvarial tion in. structural details without departing l'ro; my invention.

Ilaving tlns described my invention, what- I claim as new, and desire tosecnre by Letters Patent, is-

1. In a drilling-n:achine, the combination of a revoh.l le t:.rret; aliorizontally-arranged l'riction driving-w heel arranged eeeentrira-llyol said tzrret: a pl:.rality oi vertically-arranged idler-disks -arriedby said turret arranged to ccessively engage said drivingwheel as saidt1 rret is revolved; a plurality of vertically-arrangml sp ndles carriedby said turret; and liorizontally-arranged frictionwheels adjnstablyarranged on said spindles iarranged in engagement with said idlerdisks,for the purpose specified.

2. In drilling-.1:a-clnnc, the combination of a revolnble tt'rret; adrivn'ig-whcel arranged eccentric-ally of said turret; a pinrality ofidler-disks carried by said turret arranged to successively engage saiddriving wheel as said t:.1ret is revolved; a plxrality of spindlescarried by said trrret; wheels adjustably arranged on said spindlesarranged in engagen ent with said i(lleldiSliS, for the prrpo se speciii e d In witness whereof I have hereunto set my hand and seal in thepresence of two witnesses.

CORN-Elk RIDDERHOF. It. s.]

Witne ses:

FREDERICK MELsox,

JAMES K.DIA1\ION1).

